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Natsuru used to be a typical student with a crush on Kaede, one of the school idols, until one day he awakens to discover that he’s turned into a busty girl! Having been chosen to become a Kampfer by the mysterious Moderators, Natsuru is now required to not only fight other Kampfers, but also to transform into a girl while doing so. Aided by a stuffed tiger, Natsuru must now battle it out with other boobalicious babes and continue to try to get close to Kaede – a task that will now be easier as she’s fallen for Natsuru’s female form! Can Natsuru keep his secret safe while maintaining his double life?
For High School DxD, it's kinda like a game, like Kampfer. Both have some perverted scenes and such, and both have the genre of fighting.
kampfer and high school Dxd are alike because they both have a plot werer a person is getting used to there powers and the people around them.
Hiro Hiyorimi is a boy who moved to the city to live with his sister; but as he was walking around town one day, he sacrificed himself to protect a girl from being hit by falling beams, and subsequently lost his life. Her name is Hime, and she is a princess who has the power to revive the dead with the flames of life. In return for reviving Hiro, he must work as a servant to protect her from any harm that comes her way. Yet even though Hiro now has a partially immortal life, his flames of life must be recharged daily or he will die yet again. Hime’s life is targeted by her siblings because the throne of the royalty is at stake, so Hiro must step up as a faithful servant to protect her life at all cost!
If you like demons, contracts, male main characters who comes back from the dead, list goes on. If you like High school DxD or Monster Princess (Kaibutsu Oujo) You'll like the other; they have simular plots, a princess (or siblings who fight to be the prince/princess) who can bring dead humans to be underlings and do their bidding.
High school DxD has more echi, fan server, some comedy, and is like a harem.
Princess Resurrection has more blood and violence.
Boy ends up as a servant to a powerful supernatural being? Both High School DxD and Princess Resurrection are two peas in a pod.
It’s a new year and Aono Tsukune and the rest of the gang are now second year students. While Kurumu, Yukari and Shirayuki are being idolized as the beauties of the second years, Moka is receiving ten times the attention and fan mail, as well as… a death threat?! But when it turns out that the culprit is Moka’s younger sister, Kokoa, that is hell-bent on killing her, the situation becomes more complicated. Now, Tsukune has more than ever to deal with; from being stalked by Shirayuki and trying to get closer to Moka, to the appearance of Kokoa who hates her sister’s sealed form and doesn’t think twice about attacking Tsukune, it is certain that it won’t be a quiet year for the students at Youkai Academy!
Middle school student Tsuna has always gone through life in last place; but when he learns that he is getting a tutor to help him raise his game, he had no idea that his benefactor would turn out to be... an infant and a mafia hitman?! As if things can’t get much stranger, Tsuna then discovers that the powerful Vongola family has chosen him to be its next successor – a position that has control over all mafia families. Joined by friends Tsuna unwillingly starts out on his path to becoming a mafia boss – if he can survive the training!
While watching High School DxD i was reminded of"Reborn". High School DxD is a ecchi anime and "Reborn" is not. However High school DxD and "Reborn" are alike because they both have similar competitions the "ranking game" in DxD and the Vongala games( i forget what it is called). the main characters of each anime both use gauntlet type weapons.
Seven years ago, Kakeru’s sister killed herself, leaving him alone. Now a teenager, Kakeru lives a quiet life with his friend Yuka and other classmates – but things change forever when he and Yuka are mysteriously transported to a frightening parallel world filled with monsters and a deep crimson sky. Though they manage to escape, Kakeru soon discovers that they aren’t alone; several other students at school also travel to the other dimension, and armed with powerful weapons they battle against its dark inhabitants. Why must they fight, and what is their purpose in the Red Night?
I think both the animes have similar parts to them. Both animes is about a normal world and a hidden world for the ordinary people, but in 11eyes the world is closed to the ordinary people while in High School DxD the world is just simply 'hidden' but open to normal people.
Both main characters have this big power hidden within them and through the serie they develop the power, but is causing damage to their body.In both animes the main characters is both set to protect a girl and due to that they desire to become stronger in order to be able to protect their loved ones.